Clock Changes in São Tomé, Sao Tome and Principe

Jan 1, 2019 - Time Zone Change (WAT → GMT)

When local standard time was about to reach
Tuesday, January 1, 2019, 2:00:00 am clocks were turned backward 1 hour to
Tuesday, January 1, 2019, 1:00:00 am local standard time instead.

Sunrise and sunset were about 1 hour earlier on Jan 1, 2019 than the day before. There was more light in the morning.

More info:
São Tomé and Príncipe Changes Its Time Zone
São Tomé and Príncipe Returns to GMT