There is no time difference between Sofia, Bulgaria and Mbabane, ESwatini currently.
Mbabane doesn't observe daylight saving time but Sofia does. DST in Sofia started on 31 March 2019 and ended on 27 October 2019. When DST is observed in Sofia the time difference between Sofia and Mbabane is 1:0 hour.
See distance from Sofia to Mbabane
5:21 am Monday, in Sofia, Bulgaria is 5:21 am Monday, in Mbabane, ESwatini