In 2015, the United Nations adopted 17 Sustainable Development Goals (SDGs) with 169 targets for transformation toward a more sustainable future by 2030. Around the world, countries struggle with their implementation, deciding priorities, and wonder about the "consistency" of these goals and targets. This study seeks to evaluate and analyze SDG target interactions in the Philippines to determine resolution measures for conflicting targets, and prioritization for reinforcing targets. The problem is modeled as a graph with 169 nodes (targets) and 14,196 edges (target interactions). Two methods are employed. First, experts were asked to evaluate interactions using a 7-point scale. It then becomes an "edge-coloring" problem for the graph. Second, a non-parametric Spearman rank correlation is used on official indicator data with resulting coefficients serving as interaction scores. The graph is similarly colored depending on the correlations. Scores are then interpreted to mean that target pairs interact positively (synergies), negatively (trade-offs), or neutrally (non-classified). Edge colorings are at sdg-interactions.herokuapp.com. Results from both methods were synthesized to formulate recommendations - most notably, negative interactions involving targets 3.1 ("Reduce maternal mortality"), 3.6 ("Reduce road injuries and deaths"), and 3.7 ("Universal access to sexual and reproductive care, family planning, and education"). Negative interactions/trade-offs should be carefully studied and resolved for better implementation efficiency. Targets that reinforce each other should be prioritized (subject to country objectives) - including 1.1 ("Eradicate extreme poverty"), 1.2 ("Reduce poverty by at least 50%"), 4.2 ("Equal access to quality pre-primary education"), 4.B ("Expand higher education scholarships for developing countries"), 6.2 ("End open defecation and provide access to sanitation and hygiene"), 6.6 ("Protect and restore waterrelated ecosystems"), 8.1 ("Sustainable economic growth"), 8.5 ("Full employment and decent work with equal pay"), 9.4 ("Upgrade all industries and infrastructures for sustainability"), and 9.5 ("Enhance research and upgrade industrial technologies"). Both methods are hampered by data collection. Efforts to recruit respondents and make the website more "intuitive" are continuing. The method of UN Indicators might be improved since, currently, the mapping of indicators to targets, as well as the weighting of indicators for their effects on targets are "global" - that is, there is only one mapping and one weighting system for all countries, and this has been questioned, pointing to possible localization in the future. [ABSTRACT FROM AUTHOR]