Whether the supervisory complaint against the lower supervisory authority's decision was filed within the 10-day time limit.
No. The deadline expired on 2010-03-15, while the complaint was mailed on 2010-03-16.
The notification date was 2010-03-03. The 10-day period under LP and LVLP expired on Saturday 2010-03-13 and was extended to Monday 2010-03-15. A mistake in calculating the deadline does not amount to an excusable impediment.