Generating time slot for managing time across multiple time zones

1. A computer implemented method to plan across time zones, the method comprising:

defining a time slot of regular time length and capacity in time local to a time zone, wherein the slot is defined by a local time start timestamp and a local time end timestamp;

upon determining that the local time end timestamp of the slot overlaps with a transition period, prolonging the time slot beyond the transition period;

correspondingly defining the prolonged time slot by an international standard time start timestamp and an international standard time end timestamp; and

generating the time slot based on the international standard time start timestamp and the international standard time end timestamp.

2. The method of claim 1 further comprising:

in response to prolonging the slot, adjusting the regular capacity of the slot by multiplying the regular capacity by a prolongation factor, wherein the prolongation factor is a ratio between a time length of the prolonged slot defined in the international standard time and the regular time length; and

associating the adjusted capacity with the prolonged slot.

3. The method of claim 1 , wherein correspondingly defining the prolonged time slot by the international standard time start timestamp and the international standard time end timestamp further comprises:

converting the start timestamp of the slot from local time to a corresponding start timestamp defined in the international standard time;

upon determining that the local time end timestamp of the slot overlaps with a transition period that is a result of a shift to daylight saving time (DST), subtracting one hour from the end timestamp of the slot in local time to change the end timestamp to a time that is correspondingly defined in the international standard time;

converting the changed end timestamp from local time to the international standard time;

adding one hour to the converted to the international standard time end timestamp; and

converting the end timestamp with the added one hour from the international standard time to local time to prolong the time slot.

4. The method of claim 1 , wherein correspondingly defining the prolonged time slot by the international standard time start timestamp and the international standard time end timestamp further comprises:

converting the start timestamp of the slot from local time to a corresponding start timestamp defined in the international standard time;

upon determining that the local time end timestamp of the slot overlaps with a transition period that is a result of a shift to non-DST, prolonging the slot by adding the regular time length to the end timestamp of the time slot represented in local time until the end timestamp is beyond the transition period; and

converting the prolonged end timestamp of the slot from local time to the international standard time.

5. The method of claim 1 further comprising:

receiving a template planning period, wherein the template planning period including a first plurality of slots of regular time length, and wherein slots from the plurality of slots are assigned capacity; and

copying the template planning period to at least one planning period.

6. The method of claim 5 , wherein copying the template planning period to the at least one planning period further comprises:

generating a second plurality of slots in the at least one planning period corresponding to the first plurality of slots of the template planning period; and

copying capacity of the first plurality of slots of the template planning period to the corresponding second plurality of slots of the at least one planning period.

7. The method of claim 6 , wherein generating the second plurality of slots in the at least one planning period further comprises:

generating the second plurality of slots in a sequence of slots, wherein a start timestamp of a slot from the second plurality of slots is an end timestamp of a previous slot in the sequence of slots, and wherein a start timestamp of a slot first in sequence in the second plurality of slots is an end timestamp of a slot last in sequence in the first plurality of slots.

8. A computer system to plan across time zones, the system including:

a memory to store computer executable instructions; and

a processor coupled to the memory to execute the instructions to:

define a time slot of regular time length and capacity in time local to a time zone, wherein the slot is defined by a local time start timestamp and a local time end timestamp;

upon determining that the local time end timestamp of the slot overlaps with a transition period, prolonging the time slot beyond the transition period;

correspondingly define the prolonged time slot by an international standard time start timestamp and an international standard time end timestamp; and

generate the time slot based on the international standard time start timestamp and the international standard time end timestamp.

9. The system of claim 8 further to:

in response to prolonging the slot, adjust the regular capacity of the slot by multiplying the regular capacity by a prolongation factor, wherein the prolongation factor is a ratio between a time length of the prolonged slot defined in the international standard time and the regular time length; and

associate the adjusted capacity with the prolonged slot.

10. The system of claim 8 , wherein correspondingly defining the prolonged time slot by the international standard time start timestamp and the international standard time end timestamp further comprises:

convert the start timestamp of the slot from local time to a corresponding start timestamp defined in the international standard time;

upon determining that the local time end timestamp of the slot overlaps with a transition period that is a result of a shift to daylight saving time (DST), subtract one hour from the end timestamp of the slot in local time to change the end timestamp to a time that is correspondingly defined in the international standard time;

convert the changed end timestamp from local time to the international standard time; add one hour to the converted to the international standard time end timestamp; and

convert the end timestamp with the added one hour from the international standard time to local time to prolong the time slot.

11. The system of claim 8 , wherein correspondingly defining the prolonged time slot by the international standard time start timestamp and the international standard time end timestamp further comprises:

convert the start timestamp of the slot from local time to a corresponding start timestamp defined in the international standard time;

upon determining that the local time end timestamp of the slot overlaps with a transition period that is a result of a shift to non-DST, prolong the slot by adding the regular time length to the end timestamp of the time slot represented in local time until the end timestamp is beyond the transition period; and

convert the prolonged end timestamp of the slot from local time to the international standard time.

12. The system of claim 8 further to:

receive a template planning period, wherein the template planning period including a first plurality of slots of regular time length, and wherein slots from the plurality of slots are assigned capacity; and

copy the template planning period to at least one planning period.

13. The system of claim 12 , wherein copying the template planning period to the at least one planning period further comprises:

generate a second plurality of slots in the at least one planning period corresponding to the first plurality of slots of the template planning period, and copy capacity of the first plurality of slots of the template planning period to the corresponding second plurality of slots of the at least one planning period.

14. The system of claim 13 , wherein generating the second plurality of slots in the at least one planning period further comprises:

generate the second plurality of slots in a sequence of slots, wherein a start timestamp of a slot from the second plurality of slots is an end timestamp of a previous slot in the sequence of slots, and wherein a start timestamp of a slot first in sequence in the second plurality of slots is an end timestamp of a slot last in sequence in the first plurality of slots.

15. A non-transitory computer readable medium storing instructions thereon, which when executed by a processor cause a computer system to:

define a time slot of regular time length and capacity in time local to a time zone, wherein the slot is defined by a local time start timestamp and a local time end timestamp;

upon determining that the local time end timestamp of the slot overlaps with a transition period, prolonging the time slot beyond the transition period;

correspondingly define the prolonged time slot by an international standard time start timestamp and an international standard time end timestamp; and

generate the time slot based on the international standard time start timestamp and the international standard time end timestamp.

16. The computer readable medium of claim 15 , wherein the instructions when executed by the processor cause the computer system further to:

in response to prolonging the slot, adjust the regular capacity of the slot by multiplying the regular capacity by a prolongation factor, wherein the prolongation factor is a ratio between a time length of the prolonged slot defined in the international standard time and the regular time length; and

associate the adjusted capacity with the prolonged slot.

17. The computer readable medium of claim 15 , wherein correspondingly defining the prolonged time slot by the international standard time start timestamp and the international standard time end timestamp further comprises:

convert the start timestamp of the slot from local time to a corresponding start timestamp defined in the international standard time;

upon determining that the local time end timestamp of the slot overlaps with a transition period that is a result of a shift to daylight saving time (DST), subtract one hour from the end timestamp of the slot in local time to change the end timestamp to a time that is correspondingly defined in the international standard time;

convert the changed end timestamp from local time to the international standard time;

add one hour to the converted to the international standard time end timestamp; and

convert the end timestamp with the added one hour from the international standard time to local time to prolong the time slot.

18. The computer readable medium of claim 15 , wherein correspondingly defining the prolonged time slot by the international standard time start timestamp and the international standard time end timestamp further comprises:

convert the start timestamp of the slot from local time to a corresponding start timestamp defined in the international standard time; upon determining that the local time end timestamp of the slot overlaps with a transition period that is a result of a shift to non-DST, prolong the slot by adding the regular time length to the end timestamp of the time slot represented in local time until the end timestamp is beyond the transition period; and

convert the prolonged end timestamp of the slot from local time to the international standard time.

19. The computer readable medium of claim 15 further to:

receive a template planning period, wherein the template planning period including a first plurality of slots of regular time length, and wherein slots from the plurality of slots are assigned capacity; and

copy the template planning period to at least one planning period.

20. The computer readable medium of claim 19 , wherein copying the template planning period to the at least one planning period further comprises:

generate a second plurality of slots in the at least one planning period corresponding to the first plurality of slots of the template planning period; and

copy capacity of the first plurality of slots of the template planning period to the corresponding second plurality of slots of the at least one planning period.