Web alarm clock for 1:51 p.m.
As you hand over your current task, set the alarm for 1:51 pm so you can switch attention and join your work call on Singapore time without carrying unfinished details into it. That leaves a brief handover window before 2:00 pm for confirming who owns the next step and keeping the call notes within reach.
Your Singapore call depends on hearing the alert when the handover has pulled your attention elsewhere, so test the sound now rather than discovering a muted browser later. Choose 1:51 pm, save the alarm, and play a quick test while your phone volume is at the level you intend to use. Keep this page active and your phone awake: if either is closed or sleeping, the alarm may not sound, and you could miss the Singapore call.
When you move away from the handover at midday, remember that Philippine humidity can make even a short trip outdoors feel heavier than expected. If you need to step outside before joining, use the remaining minutes for a shaded route, carry water, and return early enough to settle somewhere with moving air before the 1:51 pm alert.